Partnership brings PSG’s embedded cryptographic identity, authentication, and verification to OT Layers 0–1 — the sensors, readers, and door hardware at the far edge of physical security systems.
AUSTIN, Texas — Aug 26, 2026 — Prometheus Security Group Global (PSG), the FED-GOV Nuclear Security Platform and a leader in Zero Trust physical security and operational technology (OT) solutions, today announced a technology partnership with Mercury Security, a global leader in open-architecture access control hardware, to extend Zero Trust principles deeper into physical security environments — all the way to the far edge.
The partnership combines Mercury’s industry-leading access control platform with PSG’s patented technology for embedding Zero Trust directly at the far-edge device — including sensors, door hardware, readers, cameras, and other field devices. By establishing trusted device identity and cryptographically authenticating and verifying field signals, PSG enables physical security systems to move beyond assumed inputs to authenticated, verified data at its source — before that data ever enters the network.
Through its partnership organizations work to reduce cyber risk across operational and physical security environments, confidence in the integrity of field-device data is increasingly critical. Most physical security systems inherently trust their field inputs and continue to rely on decades-old end-of-line resistor (EOL) technology, which was designed to detect circuit faults but provides no device identity, authentication, or signal verification.
“Zero Trust begins with knowing that the data entering a system is both authenticated and verified. Mercury’s leadership in access control, combined with PSG’s embedded identity and signal verification at Layers 0 and 1, gives customers a powerful way to strengthen security at the far edge — across both analog and digital environments — without requiring wholesale replacement of existing infrastructure.”
— Rick Gross, CEO, Prometheus Security Group Global
“Mercury has built its reputation on delivering open, flexible, and highly reliable access control solutions. By collaborating with PSG, we are strengthening the integrity of physical security data and supporting the evolving cybersecurity requirements of our customers.”
— Damon Dageenakis, Senior Director of Product Management, Mercury Security
Under the partnership, PSG and Mercury will collaborate on technology initiatives, market education, and customer engagement designed to help security leaders apply Zero Trust principles throughout physical security systems — strengthening security at the far edge while preserving investments in existing physical security infrastructure.
For PSG, the partnership represents an important step in advancing a broader Zero Trust architecture for physical security: establishing trust not only in users and networks, but also in the devices, communications, events, and data that drive physical security decisions. As AI and advanced analytics increasingly influence those decisions, the ability to authenticate and verify data at its source becomes even more critical — AI can only be as trusted as the data it receives.
About Prometheus Security Group Global
Prometheus Security Group Global (PSG) delivers a unified physical security platform built on Zero Trust Architecture, bridging legacy analog systems and modern digital networks to protect the nation’s most critical assets. From field-level sensors and devices at the far edge (Layers 0–1) through security management, Command & Control, and enterprise integration (Layers 2–3), PSG continuously authenticates and verifies devices, communications, and data from source to decision.
PSG's technology is designed to complement, not compete with, existing security platforms. OEMs, integrators, and end users can deploy the PSG technologies that best fit their needs—from securing existing analog and new digital devices at the far edge to implementing a complete end-to-end Zero Trust solution. By delivering authenticated, verified, AI-ready data at the source, PSG strengthens the access control, intrusion detection, video, analytics, AI, and enterprise solutions already in place.
Backed by federal government certifications and ATOs and a $200M+ IP portfolio, PSG solutions serve Defense, Energy, Government, and Critical Infrastructure customers worldwide.
Note to Editors
In physical security and operational technology (OT) systems, the “far edge” is the outermost layer of field devices — the sensors, readers, cameras, door hardware, and other devices that generate the data on which security systems depend.
In the Purdue reference model used across industrial and OT environments, these devices reside at Layers 0 and 1, closest to the physical world. Historically, physical security systems have trusted the signals these devices report and relied on end-of-line (EOL) resistors to identify conditions such as a cut or shorted wire. While useful for circuit supervision, EOL technology does not establish the identity of the device or authenticate the signal it generates.
Embedded Zero Trust at Layers 0–1 extends cryptographic device identity, authentication, and signal verification to the field device itself, enabling data to be authenticated and verified at its source before it enters the broader security network. This is the capability PSG brings to its partnership with Mercury.
For more information, visit www.psgglobal.net and www.mercury-security.com
